<template>
  <div>
    <el-row type="flex" justify="end">
      <el-select v-model="currentYear" size="small" style="width: 120px" @change="dateChange">
        <el-option v-for="item in yearList" :key="item" :label="item" :value="item">{{ item }}</el-option>
      </el-select>
      <el-select v-model="currentMonth" size="small" style="width: 120px;margin-left:10px" @change="dateChange">
        <el-option v-for="item in 12" :key="item" :label="item" :value="item">{{ item }}</el-option>
      </el-select>
    </el-row>
    <el-calendar v-model="currentDate">
      <template
      slot="dateCell"
      slot-scope="{date, data}">
        <div class="date-content">
          <span class="text">{{data.day | getDay}}</span>
          <span v-if="isWeek(date)" class="rest">休</span>
        </div>
      </template>
    </el-calendar>
  </div>
</template>

<script>
export default {
  props: {
    startDate: {
      type: Date,
      default: () => new Date()
    }
  },
  data () {
    return {
      currentMonth: null, // 当前月份
      currentYear: null, // 当前年份
      currentDate: null,
      yearList: []
    }
  },
  filters: {
    getDay (day) {
      // day是2022-7-07-01 改成 取日
      return day.split('-')[2].startsWith(0) ? day.split('-')[2].substring(1) : day.split('-')[2]
    }
  },
  //   初始化事件
  created () {
    //    处理起始时间
    // 获取到当前的年份
    this.currentYear = this.startDate.getFullYear()
    // 组件要求起始时间必须是 周一开始 以一个月为开始
    this.currentMonth = this.startDate.getMonth() + 1
    // 根据当前的年 生成可选年份 前后各加5年
    this.yearList = Array.from(Array(11), (value, index) => this.currentYear + index - 5)
    this.currentDate = this.startDate
    this.dateChange()
  },
  methods: {
    dateChange () {
      const year = this.currentYear
      const month = this.currentMonth
      this.currentDate = new Date(`${year}-${month}-1`)
    },
    isWeek (date) {
      return date.getDay() === 6 || date.getDay() === 0
    }
  }
}
</script>

<style  scoped>
 /* /deep/ 如果报了语法错误，那么改成::v-deep这种写法就不报错了 */
 ::v-deep .el-calendar-day {
  height:  auto;
 }
 ::v-deep .el-calendar-table__row td,::v-deep .el-calendar-table tr td:first-child,  ::v-deep .el-calendar-table__row td.prev{
  border:none;
 }
.date-content {
  height: 40px;
  text-align: center;
  line-height: 40px;
  font-size: 14px;
}
.date-content .rest {
  color: #fff;
  border-radius: 50%;
  background: rgb(250, 124, 77);
  width: 20px;
  height: 20px;
  line-height: 20px;
  display: inline-block;
  font-size: 12px;
  margin-left: 10px;
}
.date-content .text{
  width: 20px;
  height: 20px;
  line-height: 20px;
 display: inline-block;

}
 ::v-deep .el-calendar-table td.is-selected .text{
   background: #409eff;
   color: #fff;
   border-radius: 50%;
 }
 ::v-deep .el-calendar__header {
   display: none
 }
</style>
